84 lines
3.1 KiB
Java
84 lines
3.1 KiB
Java
/*
|
|
* Copyright (c) 2018, Red Hat, Inc. All rights reserved.
|
|
*
|
|
* This code is free software; you can redistribute it and/or modify it
|
|
* under the terms of the GNU General Public License version 2 only, as
|
|
* published by the Free Software Foundation.
|
|
*
|
|
* This code is distributed in the hope that it will be useful, but WITHOUT
|
|
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
|
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
|
|
* version 2 for more details (a copy is included in the LICENSE file that
|
|
* accompanied this code).
|
|
*
|
|
* You should have received a copy of the GNU General Public License version
|
|
* 2 along with this work; if not, write to the Free Software Foundation,
|
|
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
|
|
*
|
|
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
|
|
* or visit www.oracle.com if you need additional information or have any
|
|
* questions.
|
|
*
|
|
*/
|
|
|
|
/* @test TestPinnedGarbage
|
|
* @summary Test that garbage in the pinned region does not crash VM
|
|
* @key gc
|
|
* @requires vm.gc.Shenandoah & !vm.graal.enabled
|
|
*
|
|
* @run main/othervm/native -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -Xmx512m -XX:+ShenandoahVerify -XX:ShenandoahGCHeuristics=passive -XX:+ShenandoahDegeneratedGC TestPinnedGarbage
|
|
* @run main/othervm/native -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -Xmx512m -XX:+ShenandoahVerify -XX:ShenandoahGCHeuristics=passive -XX:-ShenandoahDegeneratedGC TestPinnedGarbage
|
|
*
|
|
* @run main/othervm/native -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -Xmx512m -XX:ShenandoahGCHeuristics=aggressive TestPinnedGarbage
|
|
*
|
|
* @run main/othervm/native -XX:+UnlockDiagnosticVMOptions -XX:+UnlockExperimentalVMOptions -XX:+UseShenandoahGC -Xmx512m -XX:+ShenandoahVerify TestPinnedGarbage
|
|
*/
|
|
|
|
import java.util.Arrays;
|
|
import java.util.concurrent.*;
|
|
|
|
public class TestPinnedGarbage {
|
|
static {
|
|
System.loadLibrary("TestPinnedGarbage");
|
|
}
|
|
|
|
private static final int NUM_RUNS = 1_000;
|
|
private static final int OBJS_COUNT = 1_000;
|
|
private static final int GARBAGE_COUNT = 1_000_000;
|
|
|
|
private static native void pin(int[] a);
|
|
private static native void unpin(int[] a);
|
|
|
|
public static void main(String[] args) {
|
|
for (int i = 0; i < NUM_RUNS; i++) {
|
|
test();
|
|
}
|
|
}
|
|
|
|
private static void test() {
|
|
Object[] objs = new Object[OBJS_COUNT];
|
|
for (int i = 0; i < OBJS_COUNT; i++) {
|
|
objs[i] = new MyClass();
|
|
}
|
|
|
|
int[] cog = new int[10];
|
|
int cogIdx = ThreadLocalRandom.current().nextInt(OBJS_COUNT);
|
|
objs[cogIdx] = cog;
|
|
pin(cog);
|
|
|
|
for (int i = 0; i < GARBAGE_COUNT; i++) {
|
|
int rIdx = ThreadLocalRandom.current().nextInt(OBJS_COUNT);
|
|
if (rIdx != cogIdx) {
|
|
objs[rIdx] = new MyClass();
|
|
}
|
|
}
|
|
|
|
unpin(cog);
|
|
}
|
|
|
|
public static class MyClass {
|
|
public Object ref = new Object();
|
|
}
|
|
|
|
}
|